(;GM[1]FF[4]SZ[19]
GN[Problem 3]
PC[http://senseis.xmp.net/?DoubleSnapback/attempts3]AP[GoWiki:2009]
DT[2011-11-30]
C[Diagram from http://senseis.xmp.net/?DoubleSnapback/attempts3

Problem 3]
PL[W]

AB[ao][bo][co][do][ep][fp][fq][cr][dr][fr][hr][es]
AW[ap][bp][cp][dp][dq][eq][br][er]

;W[cq]C[W1]MN[1]
;B[ar]C[B2]MN[2]
;W[bq]C[W3]MN[3]
;B[bs]C[B4]MN[4]

;
)
